The French Resistance was the group that had a major influence on planning and executing acts of sabotage before the attacks on Normandy,
<h3>Who are French Resistance?</h3>
These were organisations that fought against the Nazi occupation of France and the collaborationist Vichy régime during the Second World War.
Hence, the group had a major influence on planning and executing acts of sabotage before the attacks on Normandy,
Therefore, the Option D is correct.
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